This fails now with a typed exception "X::Syntax::ArgFlattener". $ perl6 -e 'say(|(|([4])))' ===SORRY!=== Error while compiling -e Arg-flattening | is only valid in an argument list at -e:1 ------> say(|(|⏏([4])))
Please note that the first '|' is valid (argument list for 'say'): $ perl6 -e 'say(|([4]))' 4 I added a test to S32-exceptions/misc.t with commit https://github.com/perl6/roast/commit/3c982d5b9e I'm closing this ticket as 'resolved'.
